Pipe-threading machine



Oct. 9, 1928. W. H. HIMES PIPE THREADING MACHINE Filed May 1926 INVENTOR il a fierhf H/m e5 ATTORNEY Patented Get. e, 192a nsirn STATES ,esaeei PATENT OFFICE.

warren E. nmns, or wILKINsBuRe, PENNSYLVANIA, as'srenon r0 wns'rma HQU'SE ELEQTRIG 8; MANUFACTURING COMPANY, a ccnrona'rron or PENNSYL- VANIA.

rlrn-rnnnanme MACHINE.

Application and May s, 1926. Serial No. 107,844. I

nomically manufactured.

A more specific object of the invention is to provide for the use of the casing of a portable thread ng machine as a lever for holding the machine during the operation of the stocks and dies. I

A further object of the invention is the provision of a portable threading machine that may be taken apart and assembled with facility to perm t examination and repairs.

it is also an object of the invention to pro: vide for reducing the distance between the guide and dies to a' minimum while still re taming proper driving connections to permit the threading of short lengths of'pipe.

Other objects of the invention will in part be obvious and in part appear hereinafter.

The invention accordingly is disclosed in the embodiment thereof shown in the accompanying drawing and compr ses the features of construction, combination. of elements and arrangement of parts which will be exemplified in the Construction hereinafter set forth and the scope of the application of which willbe indicated in the claims.

For a full understanding of the nature and objects of the invention, reference may be had to the following detailed description taken in conjunction with the accompanying drawing in which,

Figure 1 is a view, partially in section and partially in side elevation, showing a portable pipe threader' constructed in accordance with th s invention.

Figure 2 is a section along the line IIII of Fig. 1 showing features of construction of the pipe threader.

Referring now to the drawing. 10 designates generally a main casing wh ch in this particular construction is in two parts, 11 and 12. The lower section of the casing is provided with a removable end plate 13 to permit the mounting; of a motor 14 therein.

in order to-facilitate the using of the machine, a handle '15 is pivotally mounted on the removable plate 13, and disposed to swm in a predetermined plane so that it may e set ins any desired position for holding the casing during operation.

The casing section 11 is shaped for the reception of a train of reduction gears of the type shown in co'pending application, Serial No. 7 03.675, filed April 2, 1924: in the name of H. Else. in connecting the two casing sectlons any method may be adopted, such as providing them with flanges and connecting the flanges by means of bolts or the like.

In this construction, a spider 16 is provided in the casing section. 10 to support a bearing 17 for the motor shaft 18. As shown, the motor shaft 18 extends through both casing sections and carries a pinion 0 gear 19 which serves to drive a train of gears that will be described hereinafter.

The. train of reduction gears provided' gears, a pinion gear 27 is fixed on the upper end of the shaft 26.

The auxiliary casing 28 comprises two sections 29 and 30. As shown, the section 29 has provided on its lower end a'flanged portion shaped to seat on the upper end of the main cas ng 10, and it may be fixed in position in any suitable manner, such as by the use of bolt screws 31. In this particular construction, the section 30 comprises a plate which is adapted to be removably mounted in the cas ng section 29 to permit access to j the auxiliary casing 28 for the installation of the operating gears.

In order tomount the stocks and dies, shown generally at 32, a sleeve 33 is rotatably disposed in the auxiliary casing 28 to extend at right angles to the motor shaft. As shown, this sleeve is rotatably mounted in bearings 33 formed in the auxiliary casing sections 30 and 29, respectively.

As shown. the sleeve 33 is driven from the pinion 27 means of a ring gear 34 which is fixed to the sleeve 33 by means of a key and a bevelled pinion 27, the auxiliary casing 28 may lee-easily and quickly removed from the main casing 10 for the purpose of making repairs and replacement of parts. Further, when the casings are properly connected positive engagement is established between the two gears.

The stocks and dies 32 which may'be of any well-known construction, may be fixed to the sleeve 33 by means of a lurality of set screws 35. In, order to gui e pieces of pipe, such as 36, into the dies, an adjustable pipe guide 37 is mounted at the opposite end of the sleeve 33 'from the stocks and dies. 7 It will be readily understood that by providing a ring gear for driving the sleeve that the distance between the guide and stocks and dies may be reducedto a minimum to permit the threading of short pieces of pipe; This construction also assures an efficient drive since the ring gear is positioned close to the dies 1.

Further, it will be 'seen that the stocks and dies have axes about which they rotate, the axes extending at right angles to the shaft of the motor and to the longitudinal axis of the substantially cylindrical casing 10. Accordingly, the casing may be used to hold the threader during operation.

In operation, when a pipe section or the like is mounted in any support, such as the vice 38, the portable pipe threader is then mounted on the end of the pipe and the dies engaged. When the motor is set in operation and the dies begin to out, there is a tendency for .the machine to swing around the axis of the pipe. In this construction,

the threader may be held by means of the casing which serves as a lever.

As will be readily understood when the machine tends to turn about the axis of the pipe, it does so upon the exertion of a force, a component of which acts at right angles to a line drawn between the axis of the stocks and dies and the handle 15 and intermedi- Thus it will be seen that the casing may be utilized as a lever for the holding of the machine during the operation of the dies.

Further itwill be readily understood that the motor may be controlled in any well known manner to rotate the stocks and dies in either direction.

ments of the invention may be made with-- out departing from the spirit thereof, it is intended that all matter contained in the casin above description, or shownin the accompanying drawing, shall be interpreted as illustrative and not in a limiting sense.

I claim as my invention:

1. In a. power-driven portable threading machine, in combination, a main casing, a motor and a motor-driven train of reduction gears carried by the main casing, an auxiliary casing mounted on the end of the main casing, a sleeverotatably mounted in the auxiliary casing, stocks and dies and a pipe guide mounted on opposite ends of the sleeve, a bevelled ring gear fixed to the sleeve at a point between the pipe guide andstocks and dies, and a bevelled pinion gear actuated by said train of gears disposed to engage the ring gear when the auxiliary casing. is in position on the main casing, the axis of the main casing extending substantially at right angles to the axis of the sleeve, whereby the casing may be usedas a lever for holding the machine during the operation of the stocks and dies.

2. In a portable threading machine in combination, a main casing, a motor" and motor driven train of gears carried by the casing, a bevelled pinion gear driven by the train of gears, said pinion extending beyond the casing, an auxiliary casing adapted to be removably mounted on the main casing, a

sleeve rotatably mounted in the auxiliary a set of stocks and dies and a pipe guide mounted on'opposite ends of the sleeve and a bevelled ring gear fixed to the sleeve between the guide and dies, said ring gear being disposed to engage the pinion when the auxiliary casing is mounted in position on the main casing. 1

3. In a portable threading machine in combination, a main casing, a motor and a motor-driven train of gears carried by the casing, a bevelled pinion gear driven by the train of gears, said pin ion extending beyond the casing, an auxiliary casing adapted to be removably mounted on the main casing, a sleeve rotatably mounted in the auxiliary casing, a set of stocks and dies and a pipe guide mounted on opposite ends of the sleeve and a bevelled ring gear fixed to the sleeve between the guide and dies, said ring gear being disposed to engage the pinion when the auxiliary casing is mounted in position on the main casing, said main casing extending at substantially right angles to the sleeve to serve as a lever for holding the machine during the operation of the stock and dies and a handle adapted to be set in different positions mounted on the main casing.

In testimony whereof, I have hereunto subscribed my name this first day of May,

WALTER 1a. i-nMEs. 

